Weed-destroying attachment for disk harrows



March 30 1926.

G. GRIMSRUD WEED DESTROYING ATTACHMENT lFOR DISK' HARRows Filed Feb.' 17. 1925 4 Sheets-Sheet 1 jn., .V @b u x .w.\ wwf...

IM/uente@ atto: nu, u

G. GRIMSRUD wEED DESTROYLNG ATTACHMENT FOR DISK HARROWS March 30 1926.

4 Sheets-Sheet 2 y Filed Feb. 17. 1925 atto: www

March 30 1925.

G. GRIMSRUD WEED DESTROYING ATTACHMENT FOR DISK HARROWS Filed Feb. 1'? 4 Sheets-Sheet :5

I gwvenoz f m y a e March 30 1926.

G. GRIMSRUD WEED DESTROTIING ATTACHMENT FOR' DISK HARROWS Filed Feb. 17 1925 4 Sheets-Sheet 4 @Hoz wu y new anduseful Improvements in Weed-.De-,`

stroying Attachments for Disk Harrowsyof i .i of 'the diskvharrowL showing the improved stronger than ever. y

Itis therefore another'iObJeet of this, i'ii To alli/)hom t may concern.' f

' 'nary typenfdjsk herren-at @renie-i1] c9151;

Patented Mei-.430, i926.

" eusrnvn enrnsrinnyor ANrnLornMonrANA;

i WnEnmnsr-norne ATTACHMENT ron DISK rBRoWs f' i Beit known that VI, vGrUsaiivia',Grilrrsnrn)A` a citi/en of the UnitedStates, residing at Antelope,` in the county v'of Sheridan and Statel of Montana, .have iiivente'cl'-yceitaivn which the followingv is specification.

This invention Vappeiftaini-, to farming. im-. elements. and the/Primary Obiet of the.

invention-is to provide a vnovel attaehinenty for disk harrovvs for'effectively destroying all ofthe Weedsin afield during the'eultiva'- tion thereof. i

It has been found that during the cultiva-,v -tion of a field With a disk harroW, that "onlyr4 a portion of the Weedsl arey destroyed and that the remainder of the Weeds'are simply turned overby the disks and that in a course of a f e'iv days the weeds are again growing veiition to provide an attachment Which'ican be quickly and readily 'associated with an ordinary type of Vdisk ,cultivator vvliichwill effectively cut and 'uproot allof the `Weeds'` left untouched by the'disks thereby assuring tliekillingof allv of the- Weeds in afield ing cultivated.

QA further object of the'inventioni to provide a'novel Weed destroyer attachment for farming implements, embodyingv a plu-l rality of cutting blades andy means forim'ov-linfr said blades into' and outof operative n. n n v l positlonrelative to the disks.

.A further ,object of th 'inv'ention is to provide novel means for mounting the 'cutting'knives'of the attachment whereby 'the' vknives are 'pern'iitted to givewhen the saine strike a hard objectsuch as rook, thereby preventing injury to the knives and the attachmentc further oibject of' the invention is the provision novel' resilient ineansforA normally vholding the knives in their operative posi- Ation against swinging movement unlesshit by a hard object such as a' rock, and novel means for adiusting said spring means relative to the standards supporting said blades.,

A Still further 91058011 4Of the nvnten is' i v:on the 'line 11-11 Ofk Figure 2k lookingin" Willbedurable and eient in use; @enthlt will be .Simple alldeasv t@ 'manufacture 'and one which can ybe incorporated with the ordi? rows,

' ment,

'With `thse ma other Objasinfviw', the

invention consists in the fno'veleonstriiction,

arrangement and: formation ofy parts7 as Awill be hereinafter more specically described,` claimed, and illustrated." inthe accompanying drawings in Which drawings,y

Figure 1; is `a fragmentary Vtop vplznryi'evv .for ,the standards the knives.v

Figu'rellis' a horizontalseetion through the attachment, taken-,on the line l-Qlof Figure 3, lookingin the 'direction of thean. ron/s1 and 'illustrating the novel meansl utilized for normally holding the kniv'esfin their operative 'position' against swinging 1@imaginent and the means for dmsthvlg. the POSWOU OYSilld knives- 1 y A'F'gure 5 isa transverse section through a! ,disk harr'ovv With the 'attachment' inciOlj-f Ap oratedtherewith taken 'on the'line 5`-`- 5 of Figure 2flookinginrthe.direction ofthe ai'-' Figure 6 isan enlarged detail perspective vievvofthe frame ofthe attachment,'y

Figure -7 isA av f detail transverse section through the frame of the attachment taken on the line Tf-77 of Figure 3 illustratingv the novel ineans for holding the blade stand-v ards in position on the frame of thel attachrFigure 8 detail 'i transverse 'section' taken through the frame on the line 8.,-'8 of Figure 9 is a fragmentary rear lelevation of` a portion ofthe frainerillustrating the position ofone the companionclainp i menibers'for receiving one of the standards,

the companion block for holding one ofthe knife standards in place, i v

' Figure `1l is a detail transverse section taken 'through lthe frame ofthe attachment the direction of the larrows andv illustrating oov Figure 1Q is3 a detail p'erspectivegview'v ofv the constrution Q'fi 'the' frame and [means fer `Siirl'llltail'eulsl'y adjusting' the knives" to? war-di'and'axvay"frointhe oi'il'tivator, t

portion koif'the.attachment illustrating the construction vofV the traine and' the arrangerv inent of one ofthe standards on the Jranie,

` The disk harronv as shovvi'i ineludejs ing angle bars 23.

' Figure 18 isa detail 'view of one ot the euttin'p; knives and supporting standards,

' Figure 'l5/l: is a fraginentary'top plan View of one of the'cut'ting knives showing its suplportingg-standard in horizontalsection;

' j Figure l5. is a ldetailiseetien" ,through the loiverend fof fone ot' thesu'pportin'g stand; 'ards. v

VReferring to the drawings in detail Wheref fin Vsimilar 'reference characters 'designate corresponding parts throughout the several views thelettergenerally indicates a disk` harrow and B the .nnprovedu'eeder attaehnient therefor. y A y l A 1s of the Qonventiona type and will net 'be d eserihedkiu detail, but

as shown they saine includes the usual 'gangsv' and the frame 22, which 2O and 21 ot disks Y the transversely extend Arranged in trent of the disks20 and lf is.' any preferred ytype of. draiitapplianee 2li whichis connected vvith'the frame inany desired fway. Y

oludes a rpair offranies 25 one(L Which is adapted to be .associated With eaoh gang of disks.

ceiveV the said angle; har"V 23.

engage thev upper surfaee ofthe front edge of the anglebarand if-so desiredelipsy'SQV can he 'clampedhetWeen the blocks 2S *and the arins 27 iforlengagfing the rear face vot'V the said angle har. y In orderto LJfurther lhold the frainerigidly Y on the traine of the harroW,.the .arms .27V are provided :with forwardly extending inclined brace rods 31 which are-holtedto tliefdrafft appliance 24 of thef'said harrou'.

The flat hard 'orfplate 26H'forins I nieaiisfo'r supp( )rting thesta'ndards 32'ffor the Weederlniives andgitoan the' s eenfhyV referring to 'Figures land 2 Yof the drawings that a standard' and ,Cutterjis provided vfor A.

each harronl disk.

T he rear face ot' the 'eaid oit-plate26'has .l 1.411155' secured thereto at spaced points.V a, p1 ot pairs ot bearing/blocks 34. wlneh i in place by suitable straps 36,` These bea ing tblocks 3d7receivef loqtvveen the saine vtional clamping' nienibersS-forholding the Self-1 .Standards .32g EaQ111-LSsC1Q1ia1 bis;

ing member.' Sf'S enemies? vill The improved; Weeder attaehnieutf l' iiihereinafterniore fully described, toperinit tli e*svvinging movement of the standards Vsol uthatjthe "knife carried thereby will he" permit-tedto sii/*ing out jotengagement With a hard object such'as a rook to prevent injury Vite' the knife during 'useot'the implemcnit.v

Each 'elainping"` ineinher ineludes: a

main olanipingfhloel; 36 vhaving` a hinge harrelB formed thereonfV rlie-,hinge barrel .37' isdi'sposed 'between the hearing blocks 34 `and a suitable hinge rod BSlIis passed hrough all vofj the hearing blocks 34 and all of. thefhinge barrels 37 of the clamping 1n`e1nhers.` Companion clamping block 39' 'is provided 4vfor eac/hn niainV `clamping block. and the imier'facesof the loloefks@arev fprovidedfwith mating recesses .4Q orreceiving the upper ends of the standards 32. r)he upper end or1` each standard is..provided with a'ball head llunjhich islitted in'co1 n panion sockets formed inthe Vinner Afaces ol tue said blocks 36* and 39. It is ohvioushy sev thisconstru-ction that the standards will he: i

held iirinly inplaceandyet-he permitted to Arotate so vthatthe eutting knives can swing ut of engagement with a hard object.

ln order to .permitthe simultaneous adjustment of all` of the knives Yinto and out of operative position relative to the. liarrow disks a guide bar 43 is as soeiated With the loweredge 'of the main' supporting platepr hoard 26. fAselearlyshovvninFigures 5,".

6 Vand -12 ofthe drakvingythis guide :hartis disposed in parallel relation tofthe hoard"VV on plate 26 and Vis eenheoted thereto fonY swinging movement by means of'hingesflf The supporting arms127 'of the frame-25 of;

the harroyv attaehmentj B is provided with depending lugs A5' which engage the vinnerY face. 'ot thexguide bar and these lugs prevent the 'torn/ard swinging or"V thefsaid guide.

han. hut 'vpermit" the rearward,` swinging f thereof.

`Rearival'idlyV projecting guide straps 46' p y y y Vguide bar s gand these guide straps receiigethe standards are securely -bolted to vthe and form guide tracks'. therefor cliiriiig'..tlie swinging movement ot the said :guide bar 43 foradjustingthelolades vinto aiidout 'oit' their operative position. l

Inorder to `normally vholdhtlie standards and the knives in theinoperative position krelative to the liariorif disls i andftof fnor- 'mally prevent swinging movement f. of the y standards incident to the general use 'oi' the l implement,A b'oltslare earriedby ay slide str apflS which', is `slidahly mounted Yin the 1 guide harjlf,` By referring to Figures, 5 and ot the drawing itcanih'e seen that the guide bar is ot a channel beam construetion and thatV the' slide; strapjis fitted in the channel 'fl hv' eaelrehanuel'pheani. fllgiese A bolts ihlyIl extend 'tl-irough Vslots 41:9 a;

,d re peetively inf.; .the lguide 4' ferme' si the 'alleen-i@ sie* upper ends'thereof. .Suitable nf'asheils 52' arev mounted `on each ofY` the bol-ts 47 and.. ex.- pansio'n springs 53ar`e c i'oil'ed about the said bolts between the 'wasliers-.V The tension of' the springs can be adjustedv vby nuts threaded on the bolts. As shown thefinner most washers mounted? on the boltsll gage the outer faces of the arms 51 and thus these springs; perform the' dual function of normally preventing rotation of' the stand?V ards and for normally holding the standards in their operative 4positionrelative to the saifd'harrow disks. y

"The outer end of the guide strap ,48de provided` with a manipulating` handle 55 for permitting the convenient sliding of this j strap and it is obvious that by's'liding the strap, the-expansion springs 53=c`an be moved toward and away froint'he standards 3Q.

In order to'rperinit Vthe simultaneous ad- Y justmentof'- all of the'bl'ades 33 into op'- erative or cinto" inoperative position. relative to" the harrow disksl an operating lever 56y `pivotall'y mounted on the r'c-d'38 adjacent to a sector rack 58 which is boltedorotlieri'vise secured to the lsaid main 'supporting plate or board 26. The lever 56 is held in any preferred adjustable position by al pawl 59 which engages the' teeth of the sector rack 58 and this `pawlcan be actuated by a rod and pivoted hand grip 66.5' The inner end of the lever 56 is provided with a right angularly shaped'foot 6l whichA engages the guide bar 43 and the foot is connected to the said guide bar 43 by use of a suitable nut and bolt 62. y y j The knives 33 are of a novel construct-ion and now will be described.

Each cutting knife33 is arranged at an anglev to its harrow disk adjacent to the lower end thereof and includes a relatively large arcuate blade and a. relatively small` diverging blade 66. TheY inner endof each blade is provided with a right angularly dis-` posed shank 67 which is connected by means of bolts 68 with an att-aching block 69.v rlhe attaching block 69 receives the lower end of the standard 32 which is provided with teeth for fitting in the block for preventing turning movement of the blades relative thereto. A plurality of fingers 70 are carried by the blades 65 to throw the Weeds to one side of the blades when the same are in use.

Inuse of theimproved device, after the disk barrow has been driven to the field to be cultivated, the lever 56 is operated so as to permit the guide bar 43 to be swung into parallel relation to the plate .26. All of the knives will now be in operative position relative to the disks. As the disks cultivate the field t-he knives in rear 'thereof will engage. the weeds and effectively up-v root the weeds and kill the same. If'one of the knives should come in Contact with a out departingfifoin the'l knifeA is' permitted' to?y Swing. rearwardly.

alpi j against the tens-ion of' the-spring but-asv soon'i asl the rock is. passedfL-thei knife will be brought back to lits former' position Vby the said' spring. c w y 1 Y n f g j Then the cultivator is being moved toand,

fro fromtlie field -itzis .merely necessary to guide bar 43rearwardly carryingjtlie knives from out of their operativeposi't-ion relativevv seen that have provided a novel attachment for disk cultivators which will effec'- tively kill all. of the weeds in afield incident to the-travelof the barrow thereover; ,i

' Chang-esas yiirdetails may be made withthis invention, butz'-,

That Ifclaim as new isi-.s

spirit or the scope'` of Vpull-up on the lever 56whichwillswing they l; A weeder attachmentk for farining-'implements comprising a supporting frameincluding a plate, i av plurality of pivoted clamps carried'bythe plate., standards -r'o-v tatably mounted in `the clamps, weeding knives carried by the l'lower ends of the standards, a swinging guide bar connected with vthe plate engaging the standards,l af Y radially extending arm connectedV witheach standard, `a boltl extending throughthe larm carried by thefguidefplate, spring. means coiled' about the bolts engaging the arms,

and means for simultaneouslyA 'slidingvthe bolts on said arms toward the standards. l

2. A we-ederV attachment for farming im-V a'nd away from plements comprisingV a supporting frame,

standards rotatablycarried by `the frame, weeding knives connectedwith the lower ends of the standards,ra radially extending arm connected with each standard, a bolt c extending through each arm, spring meansi coiledV about each boltv for engagingthe arm for normally holding the 'standards in a predetermined position, ,and means for siinultaneously adjusting the bolts on said arms toward and away Afrom said standards.

, '3. The'combination with a disk harrow including aplurality of harrow disks, Vof a frame connected with the barrow including a rearwardly extending guide, bar, a cutting knife for each harrow disk arranged at an angle thereto, a. stand-ard for each knife,

means pivotally connecting each standard tothe frame, guides carried `by'thefswinging guide `bar for the'standards, and resilient means normally holding the standards against swingingmovement andthe guide -bar against swinging movement.

4. The combination 'with a disk hariow including a plurality of harrow disks, of a. frame 'connected with the harrow including a rearwardly extending guide bar, a cutting knife for eacfh'harrev disk arranged at an angleftheretmza standar-dior reachV knife,'

Vmeans pivotallyconnecting each standard to llleEtIlS Y thebi'rame, guides carried 'by the 'swngg 1 guide bar for. the standards,y yandv resilient normally i holding the standardsv against swinging movementband ythe guide bar against swinging movement ,and means for adjusting said guide bar against theten# sionoif the'spring for permitting the simul-V 10` vtaneous adjustment of Athe knives. 5.' The combination. of a yeeder attach-y kment for the barrow comprisinga frame disposed above the'harrow disk including a'at plate. depending standards pivoted to the plate, Weed cutting` knives arranged at an! angle to the disks connected with the standards, a guide barhinge'dly connected with the plateand arranged to'engage'all oi the .,standai'ds,.1neans engaging the guide bar to' limit the swinging movement thereof', in

` one@ directioinangularly extending `slotted vagainst swinging movement and the l bai'y arms carried lby the lstandards",bolts carried lby the' guideba'ry extending through the slotted arms;enpansionsprings coiled Vabout said 'bolts' normally holding `,the arms against swinging movement. i

6. The combination' with 'a disk liai'row of a'vWeeder attachment therefor compris- -ing a frame'connected With the harrowincludinga plate arranged longitudinally of the harrow a plurality of standards depend- V said bar.

ing romthe yplate and 'piyotally connected to the plate at its upperY ends, Weedrcutting kniye's carried Vbyj-the vlower ends of the standards,1 a jchannel ,f shaped gnidel .bar

hingedly connectedjto the plate, a guide *s strap slidably mounted inthe channel gui de bar, a Vplurality o bolts carried by then-guidev *straps` extending through Vslots formed in` said guide bar, angularly extending slotted arms formed on the standardsreceiving said bolts, vexpansion springs coiled about the boltsengagingsaid slotted arms, meansV for sliding the slide strap and means i'orfswinging said channel bars relative tol thendisks.

7; A Weeder attachment `for farming im v pleinents coinprisingal supporting frame in! "cludingaplate a plurality of `hinged clamps carried the plate,l eachfclamp consisting Voit companion blocks, standardsjrotatably' mounted in tlielblocks, weeding knives carried by the lowery ends-oi the standards, a swinging guide bar connected with the plate engaging,one of thegstandardsfa 4radially whereof I affix ymy signag 

